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- 20 April 2008
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I adhere to the 'if it ain't broke, don't fix' philospohy', but am always looking at more efficient ways to go about doing things. Take no notice of the actual strikes, they are all ficticious. Thought I'd throw up a replica of an IC with the debit & calander set ups just to explain what I'm thinking.
So back to.. am tossing up between static hedging & just adjusting the IC as I go, difficult to explain as it all depends on my view at the time & what the market throws at me as to how I would adjust. Suppose all I'm after is some feedback on whether other traders go with built in protection or adjusting during play?
Maybe some definitions will help
Static replication is to help minimize dynamic hedging costs and risks.
So for the IC, the wings are the static hedge as it offsets partially all of the risk of the short strangle. What remains is dynamically hedged.
In your example there are even more static hedges which reduces the bet you are taking - hence the cost.
My approach is that I will have a view on vol or direction - always defined at the beginning of the trade
e.g. Short Vega.
So be long the butterfly at neutrality
When vol declines are in my favour I will either
1) offset as it was a binary vol bet
2) if I believe the spot will be choppy - offset enough so the remaining trade is a punt or will tighten the static replication [wings] to lock in profits.
If the vol bet goes wrong I quickly offset and reallocate to another trade. No adjusting to defend losses and no alteration of my intial view of vol/direction [I guess I have faith in my models].
I begin to delta hedge the remaining position with spot 2 weeks before expiry, but not as much in the last week as delta accumulates
While this is happening I usually have a basket of flys, which are hedged with an index straddle [correlation matrix] or index futures.
So my approach is to hedge the entire book as a primary concern, the individual position secondary